If $a$,$b$,$c \in {R^ + }$ are such that $2a$,$b$ and $4c$ are in $A$.$P$ and $c$,$a$ and $b$ are in $G$.$P$., then
If $a$,$b$,$c \in {R^ + }$ are such that $2a$,$b$ and $4c$ are in $A$.$P$ and $c$,$a$ and $b$ are in $G$.$P$., then
- A
$a^2$, $ac$ and $c^2$ are in $A$.$P$.
- B
$c$, $a$ and $a$ + $2c$ are in $A$.$P$.
- C
$c$, $a$ and $a$ + $2c$ are in $G$.$P$.
- D
$\frac{a}{2}$,$c$ and $c$ -a are in $G$.$P$.
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